As part of a multi-phased renovation of the UN Headquarters Building, EverGreene conserved the 1952 murals by Fernand Léger and applied new plaster in the General Assembly and Security Council Chambers. To restore the murals, installed in the General Assembly, EverGreene conducted a conditions assessment to determine appropriate methodology and conservation treatments. It was determined that a combination of aqueous and dry cleaning techniques would be most effective to remove surface dirt without leaving residue or damaging the mural. Conservators then stabilized flaking paint and inpainted areas of loss with conservation paints.
In addition to implementing traditional 3-coat plaster throughout the UN Building, craftsmen spray-applied acoustic plaster in both the General Assembly and Security Council Chamber. In total, EverGreene applied over 150,000 sf of acoustic, veneer and traditional 3-coat plaster to these significant spaces within one of the most iconic buildings in the world.